Multiple-effect evaporating apparatus.



No. 662,399. Patented Nov. 27, I900.

E. J. DUFF.

MULTIPLE EFFECT EVAPOBATING APPARATUS.

Application filed Feb. 13, 1900.) (No Model.)

1% van Z2) llnirnn drains Parnnr Orricn,

EDVVARD JAMES DUFF, OF LIVERPOOL, ENGLAND, ASSIGNOR OF ONE-HALF TO THE UNITED ALKALI COMPANY, LIMITED, OF SAME PLACE.

lVl ULTlPLE-EFFRECT EVAPORAT-ING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 662,399, dated November 2'7, 1900.

Application filed February 13. 1900. erial No. 5,116. (No model.)

To all whom, itmay concern: the salt from both or all of the evaporating- Be it known that I, EDWARD JAMES DUFF, chambers of a group is removed by means of engineer, a subject of the Queen of Great the elevator. Britain and Ireland, residing at 30 James In the drawings the evaporating-chambers 5 street, Liverpool, in the county of Lancaster, A A are shown in one group, their legs O O England, have invented certain new and opening into one boot D,provided with an eleuseful Improvements in Multiple-Efiect Apvator E E and the chambers A A are shown .paratus for Use in Evaporating Brine; and I in another group, their legs O O opening into do hereby declare the following to be a full, the boot D of another elevator E E but, as

10 clear, and exact description of the invention, before stated, the chambers may be arranged such as will enable others skilled in the art to in a group, or in groups of other number than which it appertains to make and use the same. two.

This invention relates to multiple-effect ap- In Fig. 1 the vessel A is shown in section to paratns, and has for its object to effect econillustrate the arrangement of tubes through 15 omy in the production of salt thereby. The which the brine circulates while being evapoevaporating-chambers may be of anysuitable rated, the said tubes being surrounded by a construction, but I prefer to use chambers belt into which the heating agent is passed, in which steam or other heated gases or vaas described in the specification of an applicapors is or are used as a source of heat. The tion for United States Letters Patent, Serial 2o evaporating-chambers are or may be ar- No. 5,114, of even date herewith. This presranged at or about the same level. Steam ent invention is, however, not limited to the (or the other heating agent employed) is ademployment of this particular arrangement mitted to the heating-chamber of the first of heating-chamber. evaporatingchamber, and the steam gener- G is the arrangement in connection with 25 ated by the evaporation of the brine in this, the last chamber of the series, consisting of a chamber is conducted to the heating-chamber descending outlet pipe, into the upper part of of the second evaporating-chamber of the sewhich condensing water is passed and falls, ries, and so on throughout the series, the last producing the necessary vacuum. evaporatingchamber being connected with Having now particularly described and as- 0 any suitable means of producing a vacuum. certained the nature of this invention and in The accompanying drawings illustrate in what manner the same is to be performed, I Figures 1 and 2, in elevations at right angles declare that what I claim isto each other, an arrangement of four evap- In multiple-effect apparatus for evaporatorating-chambers, (marked A A A A the ing brine; the combination of evaporating- 5 heating-chambers thereof being marked B chambers arranged side by side in groups of B B B respectively, and the connections two, or more, legs, for the deposit of salt, between the heating and evaporating chamfrom each group meeting in one boot of an bers being marked b 12 11 The dips at bare elevator common to both, or all, of the said for collecting and discharging water. The legs, tubes for the circulation of brine, a belt 40 brine is fed by the pipe at and branch pipes surrounding the tubes into which the heata into each of the evaporatirig-chambers seping agent passes, pipes or passages one leadarately, and the brine does not fiow from ing from the top of each evaporating-chamchamber to chamber, as hitherto. As evapoher into the belt of the next succeedingevapration proceeds salt is deposited in each of mating-chamber, and means for feeding the 45 the chambers and falls through a leg G into evaporating-chambers separately with brine,

a boot D, through which an elevatorE works substantially as hereinbefore described.

to carry the salt up a tube or casing E and In testimony whereof I affix my signature Ioo deliver it into a receptacle E. The evapoin presence of two witnesses.

rating-chambers are arranged in groups of 50 two or more, the legs G from the evaporating EDWVARD JAMES D chambers of each group meeting in the one WVitnesses: boot D of an elevator E E common to both ALFRED PATCEETT, or all of the said legs 0, and from this boot THOMAS SPROAT. 

